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June 29, 2009
about 8 months ago
I’m doing a project using the ADXL335 accelerometer from SparkFun. The actual project I’m using P5 and it’s working great. I’m running workshops in parallel and want to demo the chip in real-time but am currently out of time to build something from scratch. I’m desperate for a simple processing (or something else) sketch that takes my x, y, z values being printed to the serial port from Arduino and visualizes them in some way. Can anyone point me to anything that won’t need a lot of coding time and effort just now?
I’m having a lot of problems with getting any accurate readings. It seemed to be working somewhat using the Arduino UNO but still says I’m below sea level by about 400ft (not true). However, I needed to switch over to a Mini and have failed to get any readings at all that make any sense. I’m not quite sure how to debug - but, I’ve soldered wire to A4 and A5 in the middle of the mini and it appears to be cleanly connected. Right now, it is reading:
Switching back to the UNO the room temp appears to be correct, but the altitude not so much.
Can anyone give some tips as to how to get to the source of the issue here? Any known issues with using this sensor with the mini? I’m using the code sample that has been posted with it untouched.
I wired this up easily and it seems to be functioning - but the altitude reading is probably 500 feet off or so from where I know I am. I’ve perused the comments below but didn’t find a consensus on whether this is expected or if it indicates some kind of error. Also - it may be that it needs calibration? Any input / help welcome!
about 2 years ago
i’m desperately seeking a way to color the plastic front of the range finder white. i tried carefully painting it but think it broke the sensor (unsurprising). does anyone know of a clever way to get this done?? thanks!
Tutorial - WiFly Wireless SpeakJet Server
about 4 years ago
Help! I’m able to connect to my WIFI at home (airport express WPA2) quickly and easily, and yet at my studio where i have a mixed WIFI (WPA/WPA2), i’m stuck and have no idea why. i’ve tried your sketches as well as the WiFly library with the same results.
At my studio, I’m able to enter command mode in the serial monitor in Arduino IDE and connect to the ssid that way. All looks good:
set wlan ssid Method
set wlan phrase xxxxxxxx
set wlan auth 4
Num SSID Ch RSSI Sec MAC Address Suites
1 SmartFi 01 -67 WPAv1 74:91:1a:0f:7e:a9 AESM-TKIP 3104 0
2 MuseGames 02 -69 WPA_Mix 00:24:01:6f:8a:bd AES/TKIPM-TKIP 3104 0
3 shadygoliath1 06 -73 WEP 00:26:62:0d:1a:f6 1104 2
4 M3 Entertainment 09 -69 WPA_Mix 0c:d5:02:1e:42:b5 TKIPM-TKIP 1104 6
5 Method 11 -55 WPA_Mix 00:26:b0:fe:8b:a3 AES/TKIPM-TKIP 3100 0
6 DHAwifi 11 -62 WPAv1 00:21:29:ae:62:8e TKIPM-TKIP 1104 0
7 DHAguest 11 -74 WEP 00:15:e9:1e:d2:f8 3104 0
join # 5
Auto-Assoc Method chan=11 mode=MIXED SCAN OK
Joining Method now..
However - in the wifly_autoconnect sketch, it gets through the setting of ssid etc, and just hangs before either failing or succeeding at associating. I’ve been posted on the Forums but no answers yet - any help would be amazing as i’m stuck and frustrated.
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